Sidebar: archived sessions can't be dragged into groups; context-menu key accelerators don't fire

Environment

• Claude Code: 2.1.215
• Claude desktop app: 1.22209.3
• macOS: 15.5 (Apple Silicon)

Context

After an update wiped sidebar groups (filed separately), the user had to re-sort a large number of sessions back into groups. Two issues make bulk re-sorting painful:

1. Archived sessions cannot be dragged into groups

Active sessions can be dragged into a sidebar group. Archived sessions cannot be dragged at all, so the only way to group them is the per-session context menu (⋮ → Move to group → pick), or unarchive → drag → re-archive. For a backlog of archived sessions this is very slow.

Expected: archived sessions should be draggable into groups like active ones, or the sidebar should offer some bulk/multi-select move.

2. Context-menu keyboard accelerators don't register

The session context menu shows single-key hints (Pin P, Mark as unread U, Rename R, Fork F, Archive A, Delete D) and the "Move to group" submenu shows numeric hints (1-n for groups, plus Ungrouped / New group). Pressing the shown keys while the menu is open does nothing — keystrokes appear to fall through to the chat input (focus never moves into the HTML menu when opened via mouse).

Expected: with the menu open, the displayed key should trigger the item (that would also largely mitigate issue 1). If the accelerators require keyboard focus in the menu first, that's not discoverable; hover-opening the menu should also arm them.

These accelerators also don't appear anywhere in the docs (checked https://code.claude.com/docs/en/keybindings), so it's unclear if they're functional or display-only.